Does using a framework prevent me from mastering J

Question

How would I become a master of JavaScript if I always used frameworks and did nothing by myself?

I asked a question on JavaScript and everyone recommend that I use framework (which won't show me the real core of JS!) instead of hand-coding.

1. Did you code your own so-called frameworks when discovering JS for yourself?
2. Did you use frameworks like jQuery all the way?
3. Could you now consider yourself to be a master of JS?

Answer 1

i think there's a confusion between Javascript language, which is simply amazing and worth learning for every programmer, and browser "object models" and css, which are messy, buggy and ugly. A good library in the functional style (guess which one i mean) encourages you to use pure Javascript in all its nicety and protects you from all that dirty and boring browser stuff.